International Tundra Experiment


The International Tundra Experiment is a long-term international collaboration of researchers examining the responses of arctic and alpine plants and ecosystems to climate change. Researchers measure plant responses to standardized, small-scale passive warming, snow manipulations, and nutrient additions. Researchers use small open-top chambers to passively increase mean air temperature by 1-2oC. The ITEX approach has been validated by tundra responses at the plot level. The network has published meta-analyses on plant phenology, growth, and reproduction, composition and abundance, and carbon flux.

ITEX sites

The ITEX network consists of more than 20 sites in polar and alpine locations around the world.

[Alexandra Fiord], Ellesmere Island

Name of site leader: Greg Henry
University: University of British Columbia
Site elevation: 0-100m
Latitude : 78.8833° N
Longitude : 75.8000° W
Date site was established: 1987
Does your site have OTC's? Yes
Number of plots at your site 90 OTCs 99 controls
When were they established? 1993
Have they been closed? If so, when? No
Is there grazing at your site? No
Climate data: Air temperature, Soil temperature, Snow depth, Precipitation, Cloud cover, Wind, global radiation etc.
Current or past data collection: Phenology, Point framing, Above ground plant traits, Flower counts, Fertilizer plots, Snowmelt dates, Snow addition and removal, GIS data, Drones, Phenocams, Transplant experiments, Plot photos, Soil moisture, Soil sampling, Succession studies
Main genera in OTC plots: Dryas, Salix, Cassiope, Vaccinium, Sedges, Grasses, Rushes, Saxifraga, Equisetum, Poppy, Oxyria, Draba, Mosses/Lichens, Fungi

Tundra Ecosystem Research Station, Daring Lake

Name of site leader: Karin Clark
University: Government of the Northwest Territories
Latitude : 65 degrees 52 min N
Longitude : 111 degrees 32 min W
Date site was established: 1995
Does your site have OTC's? Currently have
Number of plots at your site 9
When were they established? Plots established 1995; OTCs in 2000
Have they been closed? If so, when? No
Is there grazing at your site? Yes
Climate data: Air temperature, Soil temperature, Snow depth, Precipitation, radiation, wind speed and direction
Current or past data collection: Phenology, Point framing, Above ground plant traits, Flower counts, Snowmelt dates
Main genera in OTC plots: Salix, Betula, Vaccinium, Sedges, Saxifraga, Oxytropis

Qikiqtaruk ([Herschel Island]), Yukon

Name of site leader: Isla Myers-Smith
University: University of Edinburgh, Yukon Parks
Site elevation: 70m
Latitude : 69.6 N
Longitude : 138.9 W
Date site was established: 1999
Does your site have OTC's? Never had
Number of plots at your site 12
When were they established? 1999
Have they been closed? If so, when?  No
Is there grazing at your site? Yes
Climate data: Air temperature, Soil temperature, Snow depth, Precipitation
Current or past data collection: Phenology, Point framing, Above ground plant traits, Herbivory, Flower counts, Plot photos, Snowmelt dates, GIS data, Drones, Phenocams, Soil sampling, Shrub common garden
Main genera in OTC plots: Dryas, Salix, Betula, Sedges, Grasses, Mosses/Lichens

Disko, Greenland">Disko Island">Disko, Greenland

Name of site leader:  Per Molgaard
University: Copenhagen
Site elevation: 10-100m
Latitude : 69.63N
Longitude : 42.17W
Date site was established: 1989
Does your site have OTC's? No
Number of plots at your site 4
When were they established? 1992
Have they been closed? If so, when? Yes 1994
Is there grazing at your site? No
Climate data: Air temperature, Soil temperature, Snow depth, Precipitation
Current or past data collection: Phenology, Point framing, Above ground plant traits, Herbivory, Flower counts
Main genera in OTC plots: Salix, Papaver, Caterpillars on willow

Arctic Station, Disko, Greenland

Name of site leader: Anders Michelsen, Bo Elberling
University: University of Copenhagen

Mesic-dry heath tundra

Site elevation: 95m
Latitude : 69 16 N
Longitude : 53 27 W
Date site was established: 20Does your site have OTC's? Only snow fences
Number of plots at your site 48
When were they established? 2012
Have they been closed? If so, when? still running
Is there grazing at your site? Yes
Climate data: Air temperature, Soil temperature, Snow depth, Precipitation, Cloud cover
Current or past data collection: Point framing, Above ground plant traits, Below ground traits, Snow fences, Soil moisture, Drones, Soil sampling
Main genera in OTC plots: Dryas, Salix, Betula, Cassiope, Vaccinium, Sedges, Grasses, Mosses/Lichens

Wet sedge tundra

Site elevation: 85m
Latitude : 69 26 N
Longitude : 53 47 W
Date site was established: 2013
Does your site have OTC's? Only snow fences
Number of plots at your site 48
When were they established? 2013
Have they been closed? If so, when? still running
Is there grazing at your site? Yes
Climate data: Air temperature, Soil temperature, Snow depth, Precipitation, Cloud cover
Current or past data collection: Point framing, Above ground plant traits, Below ground traits, Snow fences, Snowmelt dates, Soil moisture, Drones, Soil sampling
Main genera in OTC plots: Salix, Sedges, Rushes, Equisetum, Mosses/Lichens

Zackenberg">Zackenberg Station">Zackenberg, Greenland

Name of site leader: Niels Martin Schmidt
University: Aarhus University
Site elevation: App. 55 m
Latitude : 74.47427
Longitude : -20.52895
Date site was established: 1996
Does your site have OTC's? Currently have
Number of plots at your site 20
When were they established? 2007
Have they been closed? If so, when? No
Is there grazing at your site? Yes
Climate data: Air temperature, Soil temperature, Snow depth, Precipitation, Cloud cover
Current or past data collection: Phenology, Point framing, Flower counts, Plot photos, Snowmelt dates, Soil moisture, Soil sampling
Main genera in OTC plots: Salix, Cassiope, Vaccinium, Grasses, Mosses/Lichens

Zackenberg, Greenland

Name of site leader: Anders Michelsen
University: University of Copenhagen
Site elevation: 35m
Latitude : 74 30 N
Longitude : 21 00 W
Date site was established: 2004
Does your site have OTC's? Yes
Number of plots at your site 20
When were they established? 2004
Have they been closed? If so, when?
Is there grazing at your site? Yes
Climate data: Air temperature, Soil temperature, Snow depth, Precipitation
Current or past data collection: Point framing, Snowmelt dates, Soil moisture
Main genera in OTC plots: Dryas, Salix, Cassiope, Vaccinium, Grasses, Mosses/Lichens

Auðkúluheiði, Iceland

Name of site leader: Ingibjörg S. Jónsdóttir
University: University of Iceland and University Centre in Svalbard
Site elevation: 450m
Latitude : 65°12'0" N
Longitude : 19°42'0" W
Date site was established: 1996
Does your site have OTC's? Yes
Number of plots at your site 30
When were they established? 1996
Have they been closed? If so, when?  No
Is there grazing at your site? Yes
Climate data: Air temperature, Soil temperature, Precipitation, Total radiation, PAR
Current or past data collection: Phenology, Point framing, Above ground plant traits, Herbivory, Flower counts, Plot photos, Snowmelt dates, Soil moisture, Soil sampling
Main genera in OTC plots: Dryas, Salix, Betula, Vaccinium, Sedges, Grasses, Rushes, Equisetum, Silene, Cerastium, Mosses/Lichens, Empetrum

[Billefjorden], Svalbard

Name of site leader: Petr Macek
University: University of South Bohemia
Site elevation: 70m
Latitude : 78.5304
Longitude :  16.3070
Date site was established: 2014
Does your site have OTC's? Yes
Number of plots at your site 30
When were they established? 2015
Have they been closed? If so, when? 
Is there grazing at your site? Yes
Climate data: Air temperature, Soil temperature, Precipitation, leaf temperatures
Current or past data collection: Plant cover, Above ground plant traits, Herbivory, Flower counts, Plot photos, Snowmelt dates, Soil moisture, Soil sampling
Main genera in OTC plots: Dryas, Salix, Cassiope, Sedges, Grasses, Rushes, Saxifraga, Equisetum, Silene, Cerastium, Oxyria, Mosses/Lichens

Knutshø, Dovre, Norway

Name of site leader: Annika Hofgaard
University: Norwegian Institute for Nature Research
Site elevation: 1050-1150m
Latitude : 62 18' N
Longitude : 09 37' E
Date site was established: 1998
Does your site have OTC's? Yes
Number of plots at your site 3
When were they established? 1998
Have they been closed? If so, when? 
Is there grazing at your site? Yes
Climate data: No, two year of air and soil temperature data at the start of site use
Current or past data collection: Above ground plant traits, Herbivory, Plot photos, plant cover
Main genera in OTC plots: Salix, Betula, Vaccinium, Sedges, Grasses, Rushes, Equisetum, Mosses/Lichens, Empetrum, Astragalus and a number of other dwarf shrubs and herbs

Finse, Norway

Name of site leader: Kari Klanderud
University: Norwegian University of Life Sciences
Site elevation: 1500 m asl
Latitude : 60.6051° N
Longitude : 7.5046° E
Date site was established: June 2000
Does your site have OTC's? Yes
Number of plots at your site 40 OTCs 40 controls
When were they established? 2000
Have they been closed? If so, when? No
Is there grazing at your site? Yes
Climate data: Air temperature, Precipitation, Done by climate station at Finse
Current or past data collection: Above ground plant traits, Flower counts, Plot photos, Soil moisture, Soil sampling, Vegetation analyses by sub plot frequencies and % cover
Main genera in OTC plots: Dryas, Sedges, Grasses, Silene, Mosses/Lichens

Kilpisjärvi Finland

Name of site leader: Anne Tolvanen
University: Natural Resources Institute Finland
Site elevation: 670 m a.s.l.
Latitude : 69.4N
Longitude : 20.490E
Date site was established: 01.06.1994
Does your site have OTC's? Currently have
Number of plots at your site 20
When were they established? 1994
Have they been closed? If so, when? running experiment
Is there grazing at your site? Yes, factorial simulated herbivory treatment.
Climate data: Air temperature, Soil temperature
Current or past data collection: Point framing, Herbivory, Soil sampling, GHG fluxes, plant C/N concentrations, soil microbial communities
Main genera in OTC plots: Salix, Betula, Vaccinium, Rushes, Mosses/Lichens

Kilpisjärvi Finland II

Name of site leader: Friederike Gehrmann
University: University of Helsinki
Site elevation: 700m
Latitude : 69.0443
Longitude : 20.8033
Date site was established: 2014
Does your site have OTC's? Never had
Number of plots at your site 24
When were they established? 2014
Have they been closed? If so, when?  No
Is there grazing at your site? Yes
Climate data: Air temperature, Soil temperature
Current or past data collection: Phenology, Snowmelt dates, Soil moisture, ecophysiology
Main genera in OTC plots: Salix, Betula, Cassiope, Vaccinium, Saxifraga, Silene

Latnjajaure, Sweden

Name of site leader: Robert Bjork and Mats Bjorkman
University: Göteborg University
Site elevation: 981 m
Latitude : 68.21N
Longitude : 18.31E
Date site was established: 1990
Does your site have OTC's? Yes
Number of plots at your site 50 plots
When were they established? 1993, 1994, 1996
Have they been closed? If so, when?
Is there grazing at your site? Yes
Climate data: Air temperature, Soil temperature, Snow depth, Precipitation, Cloud cover, Wind, global radiation etc.
Current or past data collection: Phenology, Point framing, Above ground plant traits, Herbivory, Flower counts, Plot photos, Fertilizer plots, Snowmelt dates, Soil moisture, Soil sampling, soil fauna, soil parameters
Main genera in OTC plots: Dryas, Salix, Betula, Cassiope, Vaccinium, Sedges, Grasses, Rushes, Saxifraga, Equisetum, Silene, Cerastium, Oxyria, Draba, Mosses/Lichens, many mosses and lichens determined to species of genera level

Paddus, Abisko, Sweden

Name of site leader: Anders Michelsen
University: University of Copenhagen

(mesic tree-line heath)

Site elevation: 550m
Latitude : 68 19 N
Longitude : 18 51 E
Date site was established: 1989
Does your site have OTC's? Yes
Number of plots at your site 48
When were they established? 1989
Have they been closed? If so, when?
Is there grazing at your site? No
Climate data: Air temperature, Soil temperature
Current or past data collection: Phenology, Point framing, Above ground plant traits, Below ground traits, Herbivory, Flower counts, Fertilizer plots, Soil moisture, Soil sampling
Main genera in OTC plots: Dryas, Salix, Betula, Cassiope, Vaccinium, Sedges, Grasses, Equisetum, Silene, Mosses/Lichens

Substrate (graminoid-rich heath)

Site elevation: 560m
Latitude : 68 19 N
Longitude : 18 50 E
Date site was established: 2012
Does your site have OTC's? Yes
Number of plots at your site 30
When were they established? 2012
Have they been closed? If so, when?
Is there grazing at your site? Yes
Climate data: Air temperature, Soil temperature
Current or past data collection: Phenology, Point framing, Above ground plant traits, Below ground traits, Fertilizer plots, Soil moisture, Soil sampling
Main genera in OTC plots: Salix, Betula, Vaccinium, Sedges, Grasses, Rushes, Equisetum, Mosses/Lichens

Multe (wet heath)

Site elevation: 430m
Latitude : 68 20 N
Longitude : 18 49 E
Date site was established: 1999
Does your site have OTC's? Yes
Number of plots at your site 30
When were they established? 1999
Have they been closed? If so, when? 
Is there grazing at your site? No
Climate data: Air temperature, Soil temperature
Current or past data collection: Phenology, Point framing, Above ground plant traits, Below ground traits, Fertilizer plots, Soil moisture, Soil sampling
Main genera in OTC plots: Salix, Betula, Vaccinium, Sedges, Grasses, Rushes, Equisetum, Mosses/Lichens

Forest (understory in open birch forest)

Site elevation: 430m
Latitude : 68 20 N
Longitude : 18 50 E
Date site was established: 2009
Does your site have OTC's? Yes
Number of plots at your site 10
When were they established? 2009
Have they been closed? If so, when?
Is there grazing at your site? No
Climate data: Air temperature, Soil temperature
Current or past data collection: Point framing, Above ground plant traits, Below ground traits, Soil moisture, Soil sampling
Main genera in OTC plots: Vaccinium, Grasses, Mosses/Lichens

Abisko [Torneträsk] treeline, Sweden

Name of site leader: Ellen Dorrepaal
University: Umeå University
Site elevation: 570-775 masl
Latitude : N68°18'-N68°31
Longitude : E18°12'-E18°54'
Date site was established: 2011
Does your site have OTC's? Currently have
Number of plots at your site 96
When were they established? 2011
Have they been closed? If so, when? NA
Is there grazing at your site? Yes
Climate data: Air temperature, Soil temperature, Snow depth, Precipitation, Soil moisture
Current or past data collection: Point framing, Above ground plant traits, Soil moisture, Transplant experiments, Nutrients; seedling survival; Experiment includes OTCs and moss removal treatments for vegetation dominated by three different moss species, across 8 sites along a precipitation gradient
Main genera in OTC plots: Salix, Betula, Vaccinium, Sedges, Grasses, Mosses/Lichens, Empetrum; In general very variable, since the experiment includes 8 sites and 3 dominant moss species per site

Arvidsjaur, Sweden">Arvidsjaur">Arvidsjaur, Sweden - forest fire chronosequence

Name of site leader: Ellen Dorrepaal
University: Umeå University
Site elevation: 424-522 masl
Latitude : N65°35'-N66°07'
Longitude : E17°15'-E19°26'
Date site was established: 2010
Does your site have OTC's? Currently have
Number of plots at your site 80
When were they established? 2010
Have they been closed? If so, when? NA
Is there grazing at your site? Yes
Climate data: Air temperature, Soil temperature, Soil moisture
Current or past data collection: Point framing, Above ground plant traits, Below ground traits, Soil moisture, Soil sampling, Transplant experiments, Soil nutrients; Nematodes; Microbial community ; seedling survival; Litter decomposition; Experiment consists of OTC x moss removal x shrub removal across 10 sites with varying fire history in the northern boreal forest, with one treatment replicate per site
Main genera in OTC plots: Vaccinium, Mosses/Lichens, Empetrum

Val Bercla, Switzerland

Name of site leader: Christian Rixen
University * WSL Institute for Snow and Avalanche Research SLF
Site elevation 2500m
Latitude 46.47
Longitude 9.58
Date site was established 1994
Does your site have OTC's? Currently have
Number of plots at your site 9
When were they established? 1994
Have they been closed? If so, when? No OTCs from 1987-2008
Is there grazing at your site? Yes
Does your site collect climate data? If yes, what type? No climate station directly at site but in the general area. Air temperature, Soil temperature, Snow depth, Precipitation, Cloud cover
Current or past data collection at your site:Phenology, Above ground plant traits, Herbivory, Plot photos, Abundance estimates
Main genera in OTC plots: Salix, Sedges, Grasses, Saxifraga, Silene, Mosses/Lichens

[Gavia Pass] I

Name of site leader: Michele Carbognani
University: Parma
Site elevation: 2700 m
Latitude : 46.3404
Longitude : 10.4986
Date site was established: 2008
Does your site have OTC's? Currently have
Number of plots at your site 20
When were they established? 2008
Have they been closed? If so, when? No
Is there grazing at your site? No
Climate data: Air temperature, Soil temperature
Current or past data collection: Phenology, Point framing, Above ground plant traits, Flower counts, Plot photos, Snowmelt dates, Soil moisture, litter decomposition
Main genera in OTC plots: Salix, Cerastium, Mosses/Lichens, Veronica, Cardamine, Poa, Leucanthemopsis

[Gavia Pass] II

Name of site leader: Alessandro Petraglia
University: Parma
Site elevation: 2700 m
Latitude : 46.3404
Longitude : 10.4986
Date site was established: 2012
Does your site have OTC's? Currently have
Number of plots at your site 18
When were they established? 2012
Have they been closed? If so, when? No
Is there grazing at your site? No
Climate data: Air temperature, Soil temperature, Precipitation, PAR
Current or past data collection: Phenology, Point framing, Flower counts, Snow addition and removal, Snowmelt dates, Soil moisture
Main genera in OTC plots: Salix, Cerastium, Mosses/Lichens, Veronica, Cardamine, Poa, Leucathemopsis

[Foscagno Pass]

Name of site leader: Nicoletta Cannone
University: Università dell'Insubria
Site elevation: 2250-2550m
Latitude : 46.04 N
Longitude : 10.02
Date site was established: 2007
Does your site have OTC's? Never had
Number of plots at your site 100
When were they established? 2007
Have they been closed? If so, when? running experiment
Is there grazing at your site? No
Climate data: Air temperature, Soil temperature, Precipitation, Snow depth and snow melting
Current or past data collection: Phenology, Above ground plant traits, Flower counts, Plot photos, Fertilizer plots, Snowmelt dates, GIS data, Vegetation data
Main genera in OTC plots: Salix, Vaccinium, Sedges, Grasses, Saxifraga, Silene, Cerastium, Oxyria, Mosses/Lichens

[Stelvio Pass]

Name of site leader: Nicoletta Cannone
University: Università dell'Insubria
Site elevation: 2700m
Latitude : 46.31 N
Longitude : 10.25 E
Date site was established: 2014
Does your site have OTC's? Currently have
Number of plots at your site 120
When were they established? 2014
Have they been closed? If so, when? running experiment
Is there grazing at your site? No
Climate data: Air temperature, Soil temperature, Snow depth, Precipitation, Snow melting dates
Current or past data collection: Phenology, Above ground plant traits, Flower counts, Plot photos, Snow fences, Fertilizer plots, Snowmelt dates, Soil moisture, GIS data, Soil sampling, Vegetation analyses
Main genera in OTC plots: Salix, Sedges, Grasses, Mosses/Lichens

Alaska Ice Cut

Name of site leader: Ellen Dorrepaal
University: Umeå University
Site elevation: 385 m asl
Latitude : N69°048'
Longitude : W148°836'
Date site was established: 2014
Does your site have OTC's? Currently have
Number of plots at your site 24
When were they established? 2014, 2016
Have they been closed? If so, when? NA
Is there grazing at your site? No
Climate data: Air temperature, Soil temperature, Snow depth, Thaw depth; Soil moisture
Current or past data collection: Point framing, Above ground plant traits, Snow fences, Soil moisture, Drones, NDVI; Ecosystem Respiration; GPP
Main genera in OTC plots: Salix, Betula, Vaccinium, Sedges, Mosses/Lichens, Ledum,  Rubus

Toolik Lake, Alaska

Name of site leader: Laura Gough, Ed Rastetter, Donie Bret-Harte
University: MBL Woods Hole, University of Alaska, Towson University
Site elevation: 730 m
Latitude : 68 deg 38 min N
Longitude : 149 deg 34 min W
Date site was established: 1976
Does your site have OTC's? No
Number of plots at your site hundreds
When were they established? 1976-2006
Have they been closed? If so, when?
Is there grazing at your site? Yes
Climate data: Air temperature, Soil temperature, Snow depth, Precipitation, Cloud cover, PAR, radiation balance, uv
Current or past data collection: Phenology, Point framing, Above ground plant traits, Below ground traits, Herbivory, Flower counts, Plot photos, Snow fences, Snow addition and removal, Fertilizer plots, Snowmelt dates, Soil moisture, GIS data, Soil sampling, NPP GPP, bulk CNP stocks and turnover
Main genera in OTC plots: Salix, Betula, Cassiope, Vaccinium, Sedges, Grasses, Rushes, Mosses/Lichens, NO OTCs--plastic greenhouses. 5 contrasting veg types

Alaska Ecotypes

Name of site leader: Ned Fetcher, Jianwu Tang, Michael Moody
University: Wilkes University, Marine Biological Laboratory, University of Texas - El Paso

[Toolik Lake]

Site elevation: 763 m
Latitude : 68.6293
Longitude : -149.5788
Date site was established: 2011, 2014
Does your site have OTC's? Currently have
Number of plots at your site 72
When were they established? 24 in 2011, 48 in 2014
Have they been closed? If so, when?
Is there grazing at your site? No
Climate data: Air temperature, Soil temperature, Snow depth, Precipitation
Current or past data collection: Phenology, Point framing, Above ground plant traits, Flower counts, Plot photos, GIS data, Drones, Phenocams, Transplant experiments
Main genera in OTC plots: Salix, Betula, Vaccinium, Sedges, Mosses/Lichens

Sagwon">Sagwon, Alaska">Sagwon

Site elevation: 297m
Latitude : 69.4239
Longitude : -148.7
Date site was established: 2014
Does your site have OTC's? Currently have
Number of plots at your site 48
When were they established? 2014
Have they been closed? If so, when?
Is there grazing at your site? No
Climate data: Air temperature, Soil temperature, Snow depth, Precipitation
Current or past data collection: Phenology, Point framing, Above ground plant traits, Flower counts, Plot photos, Transplant experiments
Main genera in OTC plots: Salix, Vaccinium, Sedges, Mosses/Lichens

Coldfoot">Coldfoot, Alaska">Coldfoot

Site elevation: 320 m
Latitude : 67.2586
Longitude : -150.1698
Date site was established: 2014
Does your site have OTC's? Never had
Number of plots at your site 24
When were they established? 2014
Have they been closed? If so, when? NA
Is there grazing at your site? No
Climate data: Air temperature, Soil temperature, Snow depth, Precipitation
Current or past data collection: Phenology, Point framing, Above ground plant traits, Flower counts, Plot photos, Transplant experiments
Main genera in OTC plots: Salix, Betula, Vaccinium, Sedges, Mosses/Lichens

Imnaviat Creek, Alaska

Name of site leader: Jeremy May and Steven Oberbauer
University: Florida International University

Dry Heath

Site elevation: 927m asl
Latitude : 68 37' N
Longitude : 149 18' W
Date site was established: 2016
Does your site have OTC's? Currently have
Number of plots at your site 16
When were they established? June 2016
Have they been closed? If so, when? No
Is there grazing at your site? No
Climate data: No
Current or past data collection: Point framing, Plot photos, NDVI
Main genera in OTC plots: Dryas, Salix, Betula, Cassiope, Vaccinium, Sedges, Grasses, Saxifraga, Mosses/Lichens

Wet Acidic

Site elevation: 927 m asl
Latitude : 68 37' N
Longitude : 149 18' W
Date site was established: 2016
Does your site have OTC's? Currently have
Number of plots at your site 16
When were they established? June 2016
Have they been closed? If so, when? No
Is there grazing at your site? No
Climate data: No
Current or past data collection: Point framing, Plot photos, NDVI
Main genera in OTC plots: Salix, Betula, Cassiope, Vaccinium, Sedges, Grasses, Saxifraga, Mosses/Lichens

[Antarctica]

Name of site leader: Nicoletta Cannone
University: Università dell'Insubria

[Edmonson Point]

Site elevation: 5-35 m  
Latitude : 74°19'S
Longitude : 165°08'E
Date site was established: 2014
Does your site have OTC's? No, but it does have precipitation shields, nutrient additions, and long-term monitoring without manipulations
Number of plots at your site 88
When were they established? 2014
Have they been closed? If so, when?  No
Is there grazing at your site? No
Climate data: Soil temperature
Current or past data collection: Point framing, Plot photos, Snow fences, Fertilizer plots, Snowmelt dates, Soil sampling, Vegetation coverage and floristic composition
Main genera in OTC plots: Mosses/Lichens

Finger Point">Finger Point (Victoria Land)">Finger Point

Site elevation: 50m
Latitude :  77°00'S
Longitude : 162°26'E
Date site was established:         2014
Does your site have OTC's? No, but it does have precipitation shields, nutrient additions, and long-term monitoring without manipulations
Number of plots at your site 36
When were they established? 2014
Have they been closed? If so, when?  No ongoing experiment
Is there grazing at your site? No             
Climate data: Air temperature, Soil temperature
Current or past data collection: Point framing, Plot photos, Snow fences, Fertilizer plots, Snowmelt dates, Soil sampling, vegetation coverage and floristic composition
Main genera in OTC plots: Mosses/Lichens

[Apostrophe Island]

Site elevation: 50m
Latitude :  73°31'S
Longitude : 167°25'E
Date site was established:         2014
Does your site have OTC's? No, but it does have precipitation shields, nutrient additions, and long-term monitoring
Number of plots at your site 36
When were they established? 2014
Have they been closed? If so, when?  No, ongoing experiment              
Is there grazing at your site? No            
Climate data: Air temperature, Soil temperature
Current or past data collection: Point framing, Plot photos, Snow fences, Fertilizer plots, Snowmelt dates, Soil sampling, vegetation coverage and floristic composition
Main genera in OTC plots: Mosses/Lichens        

Tarn Flat

Site elevation: 20m
Latitude :  74°59'S     
Longitude : 162°37'E
Date site was established:         2014
Does your site have OTC's? No, but it does have precipitation shields, nutrient additions, and long-term monitoring
Number of plots at your site 36
When were they established? 2014
Have they been closed? If so, when?  No, ongoing experiment
Is there grazing at your site? No              
Climate data: Soil temperature
Current or past data collection: Point framing, Plot photos, Snow fences, Fertilizer plots, Snowmelt dates, Soil sampling, vegetation coverage and floristic composition
Main genera in OTC plots: Mosses/Lichens

Boulder Clay

Site elevation: 150 m                    
Latitude :  74°44'S
Longitude : 164°01'E
Date site was established:         2014
Does your site have OTC's? No, but it does have precipitation shields, nutrient additions, and long-term monitoring
Number of plots at your site 36
When were they established? 2014
Have they been closed? If so, when?  No, ongoing experiment
Is there grazing at your site? No              
Climate data: Air temperature, Soil temperature, Snow depth
Current or past data collection: Point framing, Plot photos, Snow fences, Fertilizer plots, Snowmelt dates, Soil sampling, vegetation coverage and floristic composition
Main genera in OTC plots: Mosses/Lichens

Reserva Ecológica Antisana

Name of site leader: Priscilla Muriel, Francisco Cuesta
University: Pontificia Universidad Católica del Ecuador
Site elevation: 4580 m
Latitude : 0°28'1.50"S
Longitude : 78° 9'43.00"W
Date site was established: August 2013
Does your site have OTC's? Yes
Number of plots at your site 25 control plots, 25 OTC plots, 7 OTC+phenology plots and 7 corresponding control plots
When were they established? August 2013
Have they been closed? If so, when?  No
Is there grazing at your site? Yes
Climate data: Air temperature, Soil temperature, This summer 2018 we will install a station with precipitation, radiation, soil water content
Current or past data collection: Phenology, Above ground plant traits, Flower counts, Plot photos, Planned: soil sampling, herbivory
Main genera in OTC plots: Páramo species

Kobbefjord (Nuuk), Greenland

Name of site leader:
University:
Site elevation: 27 m
Latitude : 64.137147
Longitude : -51.379999
Date site was established: 2008
Does your site have OTC's? Yes
Number of plots at your site 30
When were they established? 2008
Have they been closed? If so, when?  No
Is there grazing at your site? No
Climate data: Air temperature, Soil temperature, Snow depth, Precipitation, Cloud cover
Current or past data collection: Phenology, Above ground plant traits, Flower counts, Plot photos, Snowmelt dates, Soil moisture, GIS data, Soil sampling
Main genera in OTC plots: Salix, Sedges, Grasses, Mosses/Lichens, Empetrum